PROBLEM TO BE SOLVED: To obtain a sporicide composition having high sporicidal effect, excellent safety and workability.SOLUTION: This sporicidal composition comprises a specific ratio of an inorganic peroxide (a), tetraacetylethylenediamine (b) and an inorganic acid alkali metal salt and/or an inorganic acid alkaline earth metal salt (c) in the weight ratio of the component (a)/the component b of 10/1 to 1/2.COPYRIGHT: (C)2001,JPO【課題】 殺芽胞効果が高く、且つ安全性、作業性に優れた殺芽胞剤組成物を提供する。【解決手段】 特定比率の無機過酸化物(a)と、テトラアセチルエチレンジアミン(b)と、無機酸のアルカリ金属塩及び/又は無機酸のアルカリ土類金属塩(c)とを含有する殺芽胞剤組成物。